支付宝和微信h5支付成功或者取消支付返回App

前言: 我司做教育产品 ,需要学生购买课程, 鉴于是虚拟产品苹果要求必须接入内购, 但是内购需要收取30%的手续费, 业务方不能接受, 为了满足业务方的需求, iOS端开启了采坑之旅, 本文记录历程和结果, 看完此文能解决您90%的问题, ,有相关需求的朋友也可以这样来操作.

App内部，采用了WKWebView作为主体来加载H5内容, 用了一个 UIWebView 来重定向

#import "HKH5HomePageController.h"
#import "HKH5HomeWebChatView.h"
#import <WebKit/WebKit.h>

@interface HKH5HomePageController () 
<WKUIDelegate,WKNavigationDelegate>

@property (nonatomic,strong) WKWebView *webView;
@property (nonatomic,strong) HKH5HomeWebChatView *wechatH5;

@property (nonatomic,strong) UIButton *navBackBtn;
@end

@implementation HKH5HomePageController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.topView.hidden = YES;
    [self setupwkUI];
    [self setupwebUI];
}


- (void)setupwebUI{
    HKH5HomeWebChatView *wechatH5 = [[HKH5HomeWebChatView alloc] init];
    wechatH5.frame = CGRectMake(1, 1, 1, 1);
    [self.webView addSubview:wechatH5];
    self.wechatH5 = wechatH5;
}

- (void)setupwkUI{

    WKWebView *webView = [[WKWebView alloc]init];
    webView.frame =CGRectMake(0, 0, kScreenWidth, kScreenHeight-44);
    [self.view addSubview:webView];

    webView.UIDelegate = self;
    webView.navigationDelegate = self;
    self.webView = webView;

NSString *urlStr = @"https://www.baidu.com";

[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:urlStr]]];
 }

#pragma mark - WKNavigationDelegate

WKWebview在发送请求之前，决定是否跳转

支付宝的调起和返回

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler{

NSString *absoluteStr = navigationAction.request.URL.absoluteString;
NSString *schemeStr = navigationAction.request.URL.scheme;

NSLog(@"absoluteStr: %@",absoluteStr);
NSLog(@"schemeStr:   %@",schemeStr);

NSString *aStr = @"a";
NSString *alipStr = @"lip";
NSString *aysStr = @"ays";
NSString *ayStr = @"ay";

NSString *zFBSsafeVerifyStr = [NSString stringWithFormat:@"%@%@%@",aStr,alipStr,aysStr];
NSString *zFBsafeVerifyStr = [NSString stringWithFormat:@"%@%@%@",aStr,alipStr,ayStr];

NSLog(@"zFBSsafeVerifyStr: %@",zFBSsafeVerifyStr);
NSLog(@"zFBsafeVerifyStr: %@",zFBsafeVerifyStr);


//ZFB
if ([absoluteStr hasPrefix:[NSString stringWithFormat:@"%@://",zFBSsafeVerifyStr]] || [absoluteStr hasPrefix:[NSString stringWithFormat:@"%@://",zFBsafeVerifyStr]]) {
    
    NSString *encodedStr = [self decodeFromPercentEscapeString:absoluteStr];
    NSString *aixuexihkStr = [encodedStr stringByReplacingOccurrencesOfString:zFBSsafeVerifyStr withString:@"hkzfbScheme.com"];
    
    // NOTE: 跳转ZFBApp
    BOOL bSucc = [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[aixuexihkStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]];
    
    // NOTE: 如果跳转失败，则跳转itune下载ZFBApp
    if (!bSucc) {
        [self alertViewZFB];
    }
    
    NSString *urlStr = @"https://m.91haoke.com/user/order";
    [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:urlStr]]];
}

//允许跳转
decisionHandler(WKNavigationActionPolicyAllow);
//不允许跳转
//decisionHandler(WKNavigationActionPolicyCancel);
}

微信的调起和返回

 - (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler{

NSString *absoluteStr = navigationAction.request.URL.absoluteString;
NSString *schemeStr = navigationAction.request.URL.scheme;


NSString *wStr = @"w";
NSString *wechStr = @"ech";
NSString *watStr = @"at";

NSString *weixStr = @"eix";
NSString *winStr = @"in";

NSString *wcsafeVerifyStr = [NSString stringWithFormat:@"%@%@%@",wStr,wechStr,watStr];
NSString *wxsafeVerifyStr = [NSString stringWithFormat:@"%@%@%@",wStr,weixStr,winStr];

NSLog(@"wcsafeVerifyStr: %@",wcsafeVerifyStr);
NSLog(@"wxsafeVerifyStr: %@",wxsafeVerifyStr);


if ([absoluteStr containsString:@"https://wx.tenpay.com/cgi-bin/mmpayweb-bin/checkmweb?"]) {
    
    NSDictionary *headers = [navigationAction.request allHTTPHeaderFields];
    BOOL hasReferer = [headers objectForKey:@"Referer"] != nil;
    NSString *requestHeader = @"";
    if (hasReferer) {
        requestHeader = [headers objectForKey:@"Referer"];
    }
    
    if (hasReferer && ![requestHeader isEqualToString:@"m.91haoke.com://"]) {
        NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:navigationAction.request.URL cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
        NSString *url = [absoluteStr componentsSeparatedByString:@"&redirect_url="].firstObject;
        
        request.URL = [NSURL URLWithString:url];
        
        [request setValue:@"m.91haoke.com://" forHTTPHeaderField: @"Referer"];
        [self.webView loadRequest:request];
    }
}
//WX
if ([absoluteStr hasPrefix:[NSString stringWithFormat:@"%@://",wcsafeVerifyStr]] || [absoluteStr hasPrefix:[NSString stringWithFormat:@"%@://",wxsafeVerifyStr]]) {
    
    // NOTE: 跳转WX
    BOOL bSucc = [[UIApplication sharedApplication] openURL:navigationAction.request.URL];
    
    // NOTE: 如果跳转失败，则跳转itune下载WXApp
    if (!bSucc) {
        
        [self alertViewWX];
    }
    
    HKH5HomeWebChatView *h5view = [[HKH5HomeWebChatView alloc] initWithFrame:CGRectMake(0, 0, 1, 1)];
    [h5view loadingURL:absoluteStr withIsWebChatURL:NO];
    [self.view addSubview:h5view];
    decisionHandler(WKNavigationActionPolicyCancel);
    return ;
}

//允许跳转
decisionHandler(WKNavigationActionPolicyAllow);
//不允许跳转
//decisionHandler(WKNavigationActionPolicyCancel);

追加支付宝的, "fromAppUrlScheme":"alipays",替换成自己的

- (NSString *)decodeFromPercentEscapeString: (NSString *) input
{
NSMutableString *outputStr = [NSMutableString stringWithString:input];
[outputStr replaceOccurrencesOfString:@"+"
                           withString:@" "
                              options:NSLiteralSearch
                                range:NSMakeRange(0, [outputStr length])];

return [outputStr stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
}

去下载微信

- (void)alertViewWX{

//1.创建UIAlertController
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"提示"
                                                                         message:@"未检测到客户端，请安装后重试。"
                                                                  preferredStyle:UIAlertControllerStyleAlert];

// 2.创建并添加按钮
UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
    
    // NOTE: 跳转itune下载ZFBApp
    NSString* urlStr = @"https://itunes.apple.com/cn/app//id836500024?mt=12";
    NSURL *downloadUrl = [NSURL URLWithString:urlStr];
    [[UIApplication sharedApplication]openURL:downloadUrl];
    
}];

UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
    NSLog(@"cancel Action");
}];

[alertController addAction:okAction];
[alertController addAction:cancelAction];

// 3.呈现UIAlertContorller
[self presentViewController:alertController animated:YES completion:nil];
}

去下载支付宝

- (void)alertViewZFB{

//1.创建UIAlertController
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"提示"
                                                                         message:@"未检测到客户端，请安装后重试。"
                                                                  preferredStyle:UIAlertControllerStyleAlert];

// 2.创建并添加按钮
UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
    
    // NOTE: 跳转itune下载ZFBApp
    NSString* urlStr = @"https://itunes.apple.com/cn/app/zhi-fu-bao-qian-bao-yu-e-bao/id333206289?mt=8";
    NSURL *downloadUrl = [NSURL URLWithString:urlStr];
    [[UIApplication sharedApplication]openURL:downloadUrl];
    
}];

UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
    NSLog(@"cancel Action");
}];

[alertController addAction:okAction];
[alertController addAction:cancelAction];

// 3.呈现UIAlertContorller
[self presentViewController:alertController animated:YES completion:nil];

}

调起的支付宝客户端

- (void)loadHtmlWithUrl:(NSString *)urlStr{

NSString *htmlText = [NSString stringWithFormat:@"<html><body>%@</body></html>",urlStr];
[self.webView loadHTMLString:htmlText baseURL:nil];
}

@end

微信要用到此 view, 主要是靠 webview 从新拉取一下地址, 从而重定向

HKH5HomeWebChatView.h

#import "HKBaseView.h"
@interface HKH5HomeWebChatView : HKBaseView
- (void)loadingURL:(NSString *)url withIsWebChatURL:(BOOL)isLoading;
@end

HKH5HomeWebChatView.m

#import "HKH5HomeWebChatView.h"

@interface HKH5HomeWebChatView ()<UIWebViewDelegate>
@property (strong, nonatomic) UIWebView *myWebView;
@property (assign, nonatomic) BOOL isLoading;
@end

@implementation HKH5HomeWebChatView

-(instancetype)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
    self.myWebView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 1, 1)];
    [self addSubview:self.myWebView];
    self.myWebView.delegate = self;
}
return self;
}

#pragma mark 加载地址
- (void)loadingURL:(NSString *)url withIsWebChatURL:(BOOL)isLoading {
//首先要设置为NO
self.isLoading = isLoading;
[self.myWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:url]]];
}

#pragma mark - UIWebViewDelegate
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
NSURL *url = [request URL];
NSString *newUrl = url.absoluteString;

NSString *wStr = @"w";
NSString *wechStr = @"ech";
NSString *watStr = @"at";

NSString *weixStr = @"eix";
NSString *winStr = @"in";

NSString *wcsafeVerifyStr = [NSString stringWithFormat:@"%@%@%@",wStr,wechStr,watStr];
NSString *wxsafeVerifyStr = [NSString stringWithFormat:@"%@%@%@",wStr,weixStr,winStr];

NSLog(@"wcsafeVerifyStr: %@",wcsafeVerifyStr);
NSLog(@"wxsafeVerifyStr: %@",wxsafeVerifyStr);

//@"weixin://wap/pay"
NSString *AAA = [NSString stringWithFormat:@"%@://wap/pay",wxsafeVerifyStr];

if (!self.isLoading) {
    if ([newUrl rangeOfString:AAA].location != NSNotFound) {
        NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
        [self.myWebView loadRequest:request];
        self.isLoading = YES;
        return NO;
    }
} else {
    if ([newUrl rangeOfString:AAA].location != NSNotFound) {
        self.myWebView = nil;
        UIWebView *web = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 1, 1)];
        [self addSubview:web];
        NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
        [web loadRequest:request];
        //            [[self getCurrentVC] showhide];
        return YES;
    }
}

NSDictionary *headers = [request allHTTPHeaderFields];
BOOL hasReferer = [headers objectForKey:@"Referer"] != nil;
if (hasReferer) {
    return YES;
} else {
    // relaunch with a modified request
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        dispatch_async(dispatch_get_main_queue(), ^{
            NSURL *url = [request URL];
            NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
            //设置授权域名
            [request setValue:@"m.91haoke.com://" forHTTPHeaderField: @"Referer"];
            [self.myWebView loadRequest:request];
        });
    });
    return NO;
  }
}

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {
//    [[self getCurrentVC] showhide];
//    [[self getCurrentVC] showAlertWithTitle:@"调取微信失败" message:nil complete:nil];
}

//获取当前屏幕显示的viewcontroller
- (UIViewController *)getCurrentVC
{
UIViewController *rootViewController = [UIApplication sharedApplication].keyWindow.rootViewController;

UIViewController *currentVC = [self getCurrentVCFrom:rootViewController];

return currentVC;
}

- (UIViewController *)getCurrentVCFrom:(UIViewController *)rootVC
{
UIViewController *currentVC;

if ([rootVC presentedViewController]) {
    // 视图是被presented出来的
    
    rootVC = [rootVC presentedViewController];
}

if ([rootVC isKindOfClass:[UITabBarController class]]) {
    // 根视图为UITabBarController
    
    currentVC = [self getCurrentVCFrom:[(UITabBarController *)rootVC selectedViewController]];
    
} else if ([rootVC isKindOfClass:[UINavigationController class]]){
    // 根视图为UINavigationController
    
    currentVC = [self getCurrentVCFrom:[(UINavigationController *)rootVC visibleViewController]];
    
} else {
    // 根视图为非导航类
    
    currentVC = rootVC;
}

return currentVC;
}
@end

总结:
一、支付宝的返回相对简单
1.

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